Bøger i Cambridge Library Collection - Physical Sciences serien

The Austrian scientist Ernst Mach (1838-1916) carried out work of importance in many fields of enquiry, including physics, physiology, psychology and philosophy. Many significant thinkers, such as Ludwig Wittgenstein and Bertrand Russell, benefited from engaging with his ideas. Mach delivered the twelve lectures collected here between 1864 and 1894. This English translation by Thomas J. McCormack (1865-1932) appeared in 1895. Mach tackles a range of topics in an engaging style, demonstrating his abilities as both a researcher and a communicator. In the realm of the physical sciences, he discusses electrostatics, the conservation of energy, and the speed of light. He also addresses physiological matters, seeking to explain aspects of the hearing system and why humans have two eyes. In the final four lectures, he deals with the nature of scientific study. The Science of Mechanics (1893), Mach's historical and philosophical account, is also reissued in this series.

The Austrian scientist Ernst Mach (1838-1916) carried out work of importance in many fields of enquiry, including physics, physiology, psychology and philosophy. Published in this English translation of 1906, these essays examine geometry from three different perspectives. Mach argues that, as our ideas about space are created by the senses and how we experience our environment, researchers must not consider the subject from a mathematical standpoint alone. In the first essay, he explains how humans generate spatial concepts. Next, he discusses the psychology of geometry, its empirical origins, and its development. In the final piece, he writes from the viewpoint of a physicist, outlining how various mathematicians, such as Carl Friedrich Gauss and Bernhard Riemann, have contributed to our geometrical understanding. Also reissued in this series in English translation are Mach's The Science of Mechanics (1893) and Popular Scientific Lectures (1895).

The Austrian scientist Ernst Mach (1838-1916) carried out work of importance in several fields of enquiry, including physics, physiology and psychology. In this short work, first published in German in 1872 and translated here into English in 1911 by Philip E. B. Jourdain (1879-1919) from the 1909 second edition, Mach discusses the formulation of one of science's most fundamental theories. He provides his interpretation of the principle of the conservation of energy, claiming its foundations are not in mechanical physics. Mach's 1868 work on the definition of mass - one of his most significant contributions to mechanics - has been incorporated here. His perspective on the topic as a whole remains relevant to those interested in the history of science and the theory of knowledge. Also reissued in this series in English translation are Mach's The Science of Mechanics (1893) and Popular Scientific Lectures (1895).

An author of educational works intended especially for young women, Jane Haldimand Marcet (1769-1858) sought to combat the notion that technical topics were unsuitable for female students. Inspired by conversations with the famous scientists she entertained, she wrote textbooks in the lively form of discussions between a teacher and her two female pupils. Published anonymously at first, they found broad popularity: Michael Faraday, as a young bookbinder's apprentice, credited Marcet with introducing him to electrochemistry. The present work, an introduction to physics, astronomy and the properties of matter, sound and light, was Marcet's first, though it remained unpublished until 1819. Her other works include Conversations on Chemistry (1805), Conversations on Political Economy (1816) and Conversations on Vegetable Physiology (1829), all of which are reissued in this series. Never professing to be original, Marcet's work is noted nonetheless for its thoroughness and clear presentation of concepts.

Professor of natural philosophy at the Royal Institution between 1853 and 1887, the British physicist and mountaineer John Tyndall (1820-93) passionately sought to share scientific understanding with the Victorian public. A lucid and highly regarded communicator, he lectured on such topics as heat, light, magnetism and electricity. In this collection of eight lectures, first published in 1867, Tyndall explains numerous acoustic phenomena for a non-specialist audience. Emphasising the practical nature of scientific enquiry, he describes experiments throughout and includes many illustrations of laboratory equipment. The lectures discuss the general properties of sound, how it travels, how noise and music differ, how gas flames can produce musical notes, and much more. Several of Tyndall's other publications, from his work on radiant heat to his exploration of alpine glaciers, are also reissued in this series.

The amateur scientist George John Singer (1786-1817) worked in the family business of artificial flower and feather making, but all his spare time was absorbed in the study of electricity and electromagnetism. He invented his own apparatus, including a gold-leaf electrometer, and built a laboratory-cum-lecture room at the back of his house: his public demonstrations were attended by Faraday and Francis Ronalds, and he was also a friend of the pioneering 'electrician' Andrew Crosse. This significant book, published in 1814, demonstrates the breadth of Singer's knowledge of his subject and of other contemporary work in the field. It describes in detail electric phenomena, in nature and in the laboratory, covering a wide range of experiments with and applications of electricity, and discussing the work of Franklin, Volta, Crosse and Dalton, among others. Sadly, Singer's promising scientific career was brought to an early end by tuberculosis: he died aged only thirty-one.

James Croll (1821-90) was self-educated, but on gaining a post at the Glagow Andersonian Museum had the time to explore his academic interests. Despite his lack of formal training, he quickly became a leading light of the Scottish Royal Geological Society. Using physics, mathematics, geology and geography he explored the pressing scientific questions of the time. In this, his final book, published in 1889, Croll divides his focus between 'the probable origin of meteorites, comets and nebulae', the age of the sun and the impact of the pre-nebular condition of the universe on star evolution. Using both proven facts and theories, Croll explores the ideas and hypotheses then current, frequently crediting colleagues for their work, and building on it. Croll, who from humble beginnings became a Fellow of The Royal Society and of St Andrew's University, writes in a style which makes his works accessible to a lay readership.

This first book by James Croll (1821-90), published in 1875, includes many of the original geophysical theories that he had formulated throughout the early years of his career. A self-educated amateur, Croll obtained work at the Glasgow Andersonian Museum, which gave him leisure time to pursue his scientific interests. The fluidity of scientific disciplines at the time allowed him to virtually invent the field of geophysics, and his unique insights united ideas previously thought unconnected, such as using physics to explore the causes of the glacial epochs, climatic changes and the circulation and temperature of ocean currents. Croll, whose Stellar Evolution and its Relations to Geological Time is also reissued in this series, later became a Fellow of the Royal Society and of St Andrew's University, but (possibly because of his non-scientific background) he writes in a style which makes his works accessible to a lay readership.

The Scottish mathematician and natural philosopher Sir John Leslie (1766-1832) had set out at the end of the eighteenth century to explore the nature of heat radiation, which he felt was a 'dubious and neglected' area of physics. Leslie's inquiry, published in 1804, details his many experiments, notably the use of two self-devised instruments: Leslie's cube and his differential thermometer. Establishing several basic laws of heat radiation and rejuvenating the debate about the physical composition of heat, Leslie's work gained him the Rumford medal of the Royal Society in 1805. Nevertheless, the same publication jeopardised his chances of obtaining an academic position at Edinburgh. A single, allegedly atheistic endnote, supporting David Hume's views on causation, prompted protests by the local clergymen when his candidature for the chair of mathematics was under consideration. Leslie secured the professorship, however, and remained with the university until his death.

The discovery in 1897 of the electron, the first subatomic particle, led to rapid advances in our knowledge of atomic structure, the solid state, radioactivity and chemistry. It also raised major questions. Was the electron point-like or did it have structure? Was there a positive electron? What did the positive part of the atom look like? Did a hydrogen atom have one electron or a thousand? Published in 1906, this expository account by leading physicist Sir Oliver Lodge (1851-1940) examines the spectacular phenomena of cathode rays in evacuated tubes, the fixed units of charge observed in electrolysis, and the puzzling regularities in atomic spectra. Lodge knew most of the pioneers in the field, and his enthusiastic descriptions of their work and clear analyses of the problems as well as successes paint a vivid picture of the excitement of cutting-edge research and the scientific process in action.

In 1816, Sir Francis Ronalds (1788-1873) became the first physicist to demonstrate the possibility of an electric telegraph. Previously, the only telegraphs were semaphores - cumbersome signal towers capable of sending only two or three words per minute. However, his idea was dismissed by the Admiralty, where senior officials deemed any new telegraphs 'unnecessary'. Although his designs were soon to be superseded by those of the more successful Samuel Morse, Ronalds' devotion to telegraphy never waned; he spent much of his life collecting books on the subject. Upon his death, his collection was left to the Society of Telegraph Engineers, where it would become available to those most in need of it. Covering more than 13,000 titles, and including a short memoir of Ronalds, this book, first published in 1880, is a catalogue of that collection and other relevant works. It remains an invaluable resource for students in the history of science.

Among the widely agreed facts of physics in the late nineteenth century was the existence of luminiferous ether: the medium through which light was thought to travel. Theorised to be a highly rarefied substance, the ether accounted for the movement of light, gravity and even heat across a vacuum. It also had great implications for spiritualism. Where thought was not proven to be a result of chemistry in the brain, the presence of ether allowed for the idea that cognition and emotion might exist independently of a physical body. First published in 1925, this monograph by the eminent physicist and ether advocate Sir Oliver Lodge (1851-1940) was written for the non-scientific reader. With a focus on straightforward explanations rather than mathematical theory, his book still represents a fascinating introduction to the topic today.

In his study of optics, Newton postulated that light, like sound, must be carried through a medium, and that this medium must exist even in a vacuum. By the late nineteenth century, this theoretical substance was known as the luminiferous ether. But the ether theory faced several problems. If the earth moved through ether, there would be ether wind, and light travelling against the flow would move more slowly than light travelling with it. That was soon disproven. Nor could the ether be stationary: by 1905, Einstein's work on relativity had disproven absolute motion. In this fascinating advocacy of ether, first published in 1933, Sir Oliver Lodge (1851-1940) fiercely defends ether against the new physics, arguing for solid models over mathematical abstractions, and urging new ether experiments. With in-depth references to Einstein, Jeans and Eddington, this book is still relevant to students in the history of science.

Sir Oliver Lodge (1851-1940) was a physicist instrumental in the discovery of electromagnetic waves: the basis of today's radio and X-ray technology. He came from humble beginnings. After suffering at the hands of violent masters and schoolmates during his childhood, Lodge went on to teach physics and chemistry to young women at Bedford College in London. Later, he was appointed professor of physics at the University of Liverpool, and became known for his public lectures on a vast range of topics, from the comic faults of phonographs to the medical applications of X-rays. Whether seeing the cells of a voltaic battery in a pile of plates or appreciating the enunciation of Alexander Graham Bell, Lodge had a warm enthusiasm that shines through in this touching autobiography, first published in 1931. It remains ideal for general readers as well as students in the history of science.